Ellie Parkon, a seemingly ordinary teenage girl is tormented by nightmares about a particular castle since childhood. In the nightmares, she finds herself walking across a pitch-black forest in freezing weather and the nightmare ends after the castle is seen. On reaching her eighteenth birthday, the nightmares become more frequent along with the appearance of a repulsive hooded figure who seems to be following her, and in turn, causes her loved ones to fall into grave peril. Moreover, Ellie discovers miraculous abilities and powers which she utilizes in an attempt to protect her loved ones agat the forces of evil. Eventually, she goes on a road trip with her friends, Alex, Judy, and Matt to a forest, where the castle that has been appearing in her nightmares nearly her whole life emerges. Upon entering the creepy place, she unravels dark and groovy secrets about the place which provide her with a link to the nightmares, the hooded creature as well as her horrifying past.